Magneto plug



June 5y 1928.

MAGNETO PLUG Filed Dec. 9. 1922 INVENTOR' Alba Q. Honeycatt ATTORNEY,

Patented June 5, 1928.

PATENT oFFlcr..

ALBA C. HONEYCTT, F WICHITA, KANSAS.

MAGNETO PLUG.

Application led December 9, k1922. Serial No. 605,903.

My invention relates to magneto plugs for internal combustion motors in which is embodied certain construction for simplicity of assembly and installation.

The object of my invention is to construct a plug, having an linsulator held in position by a metallic sleeve and an annular ring base, with adjusting means, with oil proof features.

the spring tension for the post be made of copper, and simple to remove for cleaning.

lith the foregoing and other objects in view, my invention consists in details o1" construction and in general arrangemento1 parts combined which are hereinafter more fully set forth and claimed.

In' the detailed description of my invention reference will be had to the accompanyn ing drawings which form a part of this application, and similar figures will rei'er to similar' parts in the various drawings.

Fig. 1 is a. sectional view of the magneto plug in its proper position. Fig. 2 is a top View `of the annular ring base. Fig. 8 is a sectional view showing the scope of adjustment.

In Fig. 1, 1 is a fragment ot a magneto case, 2 is a fragment ot the coil frame, 3 is the Contact point, 4 is the copper spring, 5 is the magneto post passing through said coil 4 and the insulator'ti, top ot' said post being threaded to receive a nut 7 for tensioning and holding in proper place, the magneto post 5. 8 is a nut with knurled rim, adapted to bind the ground wire 9 between said nut and nut 7. 10 is a metal sleeve preferably made of aluminum, said sleeve is adapted to receive the insulator 6, holding itoil tight by reasonk of the tapering form of said insulation and a vsimilar taper ot the bore ot' sleeve 10,A which occur approximately between the dotted lines indicated in Fig. 1. 11 is an annular base, said base being fastened to magneto case 1, by means of screws 12, said base, being placed concentric to a hole. through the magneto case which i isadaptedk to receive the insulator G. The said base has an annular tongue 13, adaptedr to register in an annular groove 141, which is in the sleeve, heretofore referred to, the object of which is to allow for an adjustment to increase or decrease the tension of A further object of my invention is that` said contact point 3 on the coil frame 2.v Should proper tension be acquired without closing the joint 15 between said sleeve and collar, the tongue 13 will 'function as astop to prevent oil passing out, or dust approaching the threads as shown at 16.

The coil spring 4 is made of copper, being soldered to the contact point 3, and seated on a washer at 18, in the insulator. My object in making this spring of copper is that it will not be necessary to remove the plug when the magneto is being charged, the electric current will not retard the tension of a copper spring as it will in the case 'of a steel spring, theretore it will not be required to remove my magneto post while charging the magneto. n

As a preventative for oil passing up the magneto post, and out through the top of the insulator, I have provided a close fitting fiber washer on the stem 5, as shown at 18. 19 is the hexagon flange of the sleeve adapted to receive a wrench and in which is placed the annular groove 14. In the course of construction to assemble the parts of my newly invented magneto post, I enter the insulator at the base of the sleeve and it is forced into the taper of said sleeve, making it oil tight, then I insert the magneto post and spring at the lower end, passing them through the insulation, then by applying the nut 7 t-o the post 5 and running it down against the top ot' said insulator, I tension the spring until the. contact point prot-rudesapproximately shown in Fig. 1. I then place the collar 11 on the magneto case, fastening it firmly as heretofore described. and then I enter the sleeve. screwing it downto the distance required for good Contact on the coil vtraine 2 and torthis process, a wrench may be used.

The ground wire 9 may be looped or have a washer soldered thereto with an aperture to pass over the post 5 and restingr on the nut 7, I then screw a nut 8. binding said connection firmly between said nuts 7 and 8.

Such modifications may be made on the various parts as lie within the appended claim.

Having thus described my invention, what I claim as new' and desire to secure by Letters Patent is;

In magneto plugs, a collar having a extension of the sleeve having an annular v groove therein to engage with the tongue on said collar, a magneto post insulator hav-` ing a taper on the outer end thereof to engage in the sleeve as means for longitudinal ad- ]ustment by the rotation of the sleeve.

ALBA o. HONEYCUTT. g K 

